Chemistry, 07.02.2022 15:50, sharmadaman641
Antartica is the coolest , driest continent on Earth, and only a few species survive i's harsh elements. Yet scientists have found fossils of green fern plants n Antartica. Based on these findings, which of these is the best conclusion?
1.The climate of Antartica changed over time.
2.The Location of Antartica has always been at the South Pole.
3. These fossils are of an organism that adapted in Antartica over time.
4. This species could currently exist in Antartica if there was less competition.
Answers: 1
Chemistry, 22.06.2019 04:00, queenkimm26
Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
Answers: 3
Chemistry, 22.06.2019 09:40, gonzaleze18
In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need
Answers: 2
Chemistry, 23.06.2019 08:00, kyle65
Problem page a jet airplane reaches 846. km/h on a certain flight. what distance does it cover in 13.0 min? set the math up. but don't do any of it. just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.
Answers: 2
Antartica is the coolest , driest continent on Earth, and only a few species survive i's harsh eleme...
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